Seat slide based on interior trim modification

Abstract

The utility model belongs to the technical field of car interior decoration, especially based on car interior decoration's seat slide rail, including opposite sliding cooperation's lower slide rail and upper slide seat, still include auxiliary support subassembly and elastic limit component, auxiliary support subassembly is located the lower slide rail top, including rotation installation in the lower slide rail's support gyro wheel and the first lubricating cover of setting in support gyro wheel, elastic limit component is located the lower slide rail end, including the fixed plate of fixed in lower slide rail and the limit board of using elastic telescopic structure and fixed plate connection, through the design of auxiliary support subassembly, strengthened the sliding stability, solved the problem that the traditional slide rail rigid friction produced the heterophonic, avoided the jamming phenomenon, shares the load, reduces the wear and tear of single cooperation surface, the design of elastic limit component, can absorb the rigid impact when the seat slides excess or the sudden impact, avoid structural deformation, prolong the service life of slide rail significantly, promote the use experience.

Description

Technical Field

[0001] This utility model belongs to the field of automotive interior modification technology, specifically relating to a seat slide rail based on automotive interior modification. Background Technology

[0002] Car interior modification is an important way to meet users' personalized needs. Among them, the adjustment of seat position and angle directly affects the riding comfort and space utilization. As a core fitting component, the performance of seat rails directly determines the modification effect and user experience.

[0003] Most existing car seat rails are original equipment manufacturer (OEM) integrated structures. These structures are designed to fit the original car seats, resulting in poor compatibility with aftermarket modifications. Furthermore, they suffer from two major drawbacks in actual use: 1. The mating surfaces of the rail and slider are rigid metal contacts, lacking effective lubrication. Prolonged sliding easily generates friction noise, which intensifies, especially on bumpy roads, severely impacting the riding experience; 2. The limiting structure uses a rigid mechanical stop design. When the seat slides excessively or experiences a sudden impact, the stop collides directly with the slider, easily causing structural deformation, shortening the overall lifespan of the rail, and even posing safety hazards, thus limiting its application in automotive interior modification.

[0004] To address the aforementioned problems, this utility model proposes a seat rail based on automotive interior modification. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a seat slide rail based on automotive interior modification, which features convenient use, high safety performance, and long service life.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a seat slide rail based on automotive interior modification, comprising a lower slide rail and an upper slide seat that slide in relative cooperation, and further comprising an auxiliary support component and an elastic limiting component;

[0007] The auxiliary support assembly is located at the top of the lower slide rail and is used to assist in supporting the lower slide rail and reduce the sliding resistance of the lower slide rail. It includes a support roller rotatably mounted on the lower slide rail and a first lubrication sleeve sleeved on the support roller.

[0008] The elastic limiting component is located at the end of the lower slide rail and is used to limit the sliding stroke of the upper slide block. It includes a fixing plate fixed to the lower slide rail and a limiting plate connected to the fixing plate using an elastic telescopic structure.

[0009] As a preferred embodiment of this utility model, the lower slide rail has a "U" shaped structure and the upper slide block has an "n" shaped structure;

[0010] The lower slide rail has outwardly bent inverted "L" shaped first folded edges on both sides, and the upper slide has inwardly bent "L" shaped second folded edges on both sides.

[0011] The vertical portion of the first folded edge is embedded inside the second folded edge, and the vertical portion of the second folded edge is embedded inside the first folded edge, forming a sliding fit structure.

[0012] As a preferred embodiment of this utility model, the auxiliary support assembly further includes a perforated support lug and a fixed shaft;

[0013] The two perforated support ears are symmetrically fixed to the top surface of the horizontal part of the first folded edge;

[0014] The fixed shaft is fixed to the end face of the support roller, and the fixed shaft passes through the perforated support lug to form a rotating structure.

[0015] As a preferred embodiment of the present invention, the elastic telescopic structure includes a telescopic rod and a telescopic spring;

[0016] One end of the telescopic rod is rigidly fixed to the fixed plate, and the other end is rigidly fixed to the limiting plate;

[0017] The telescopic spring is sleeved on the telescopic rod and is located between the fixed plate and the limiting plate.

[0018] As a preferred embodiment of this utility model, a rubber gasket is bonded and fixed to the outer wall of the limiting plate.

[0019] As a preferred embodiment of the present invention, it further includes a protrusion and a second lubrication sleeve;

[0020] A recessed portion is formed on the vertical portion of the second folded edge by pressing and denting, and the protrusion is fixed to the outer wall of the lower slide rail and is adapted to the recessed portion;

[0021] The second lubricating sleeve is fixed to the outer wall of the protrusion.

[0022] As a preferred embodiment of this utility model, both the first lubricating sleeve and the second lubricating sleeve are polytetrafluoroethylene components.

[0023] As a preferred technical solution of this utility model, it also includes steel balls;

[0024] The top surface of the first folded edge is provided with a first limiting surface, the inner side of the upper slide is provided with a second limiting surface, and the steel ball is located between the first limiting surface and the second limiting surface.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] 1. The design of auxiliary support components enhances sliding stability, solves the problem of abnormal noise caused by rigid friction of traditional slide rails, avoids jamming, and at the same time distributes the load and reduces the wear of individual mating surfaces;

[0027] 2. The design of the elastic limiting component can absorb the rigid impact when the seat slides too much or when there is a sudden impact, avoid structural deformation, significantly extend the service life of the slide rail, and improve the user experience.

[0028] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is an exploded structural diagram of the present invention;

[0032] Figure 3 This is a partially enlarged schematic diagram of the lower slide rail structure in this utility model;

[0033] Figure 4 This is an isometric structural diagram of the elastic limiting component in this utility model;

[0034] Figure 5 This is a schematic diagram of the cooperation structure between the lower slide rail and the upper slide block in this utility model.

[0035] In the diagram: 1. Lower slide rail; 11. First folded edge; 111. First limiting surface; 2. Upper slide block; 21. Second folded edge; 211. Recessed part; 22. Second limiting surface; 3. Auxiliary support assembly; 31. Support ear with hole; 32. Support roller; 33. Fixed shaft; 34. First lubricating sleeve; 4. Elastic limiting assembly; 41. Fixed plate; 42. Limiting plate; 43. Telescopic rod; 44. Telescopic spring; 45. Rubber pad; 5. Steel ball; 6. Protrusion; 7. Second lubricating sleeve. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Please see Figures 1-5 The present invention provides the following technical solution: a seat slide rail based on automotive interior modification, including a lower slide rail 1 and an upper slide seat 2 that slide in relative cooperation, and also includes an auxiliary support component 3 and an elastic limiting component 4.

[0038] Furthermore, by Figure 1 and Figure 2 As shown in this embodiment, the auxiliary support component 3 is located at the top of the lower slide rail 1 to assist in supporting the lower slide rail 1 and reduce the sliding resistance of the lower slide rail 1. It includes a support roller 32 rotatably mounted on the lower slide rail 1 and a first lubrication sleeve 34 sleeved on the support roller 32. The elastic limiting component 4 is located at the end of the lower slide rail 1 to limit the sliding stroke of the upper slide seat 2. It includes a fixing plate 41 fixed to the lower slide rail 1 and a limiting plate 42 connected to the fixing plate 41 by an elastic telescopic structure. After adopting the above solution, in the scenario of car interior modification, the seat to be modified is fixedly connected to the upper slide seat 2 by bolts or buckles, and the lower slide rail 1 is rigidly fixed to the car body floor by welding or fasteners, forming a stable assembly system of "seat-upper slide seat 2-lower slide rail 1-car body".

[0039] When a user needs to adjust the seat position, a pushing or pulling force along the longitudinal direction of the vehicle body is applied to the seat. This force is transmitted to the upper sliding seat 2, causing the upper sliding seat 2 to slide relative to the lower sliding rail 1, thereby achieving linear adjustment of the seat position.

[0040] The auxiliary support assembly 3 is rotatably mounted on the top of the lower slide rail 1 via a bearing seat (not marked in the figure, which is the mounting base for the support roller 32). The outer circumferential surface of the support roller 32 is kept in contact with the bottom sliding contact surface of the upper slide block 2. Its core function is achieved through "rolling friction replacement + lubrication enhancement".

[0041] First, when the upper slide block 2 slides relative to the lower slide rail 1, the bottom of the upper slide block 2 comes into contact with the outer circumferential surface of the support roller 32. Since the support roller 32 can rotate freely around its own axis, the traditional "sliding friction between the upper slide block 2 and the lower slide rail 1" is transformed into "rolling friction of the support roller 32". According to the principle of friction mechanics, the rolling friction coefficient is much smaller than the sliding friction coefficient, which can significantly reduce the resistance when the upper slide block 2 slides, making seat adjustment easier and operation smoother.

[0042] Secondly, the first lubrication sleeve 34, which is fitted onto the outer circumference of the support roller 32, is made of a wear-resistant material with a low coefficient of friction (such as polytetrafluoroethylene or modified nylon). On the one hand, it can fill the tiny gap between the support roller 32 and the bottom of the upper slide block 2, avoiding vibration noise caused by the gap during sliding. On the other hand, the first lubrication sleeve 34 itself has self-lubricating properties, which can continuously reduce contact friction without the need for additional lubricant. At the same time, it isolates the support roller 32 from the direct metal contact between the upper slide block 2, reducing wear on both and extending the overall service life of the slide rail.

[0043] Finally, the auxiliary support components 3 are spaced apart along the length of the lower slide rail 1 (e.g., 2-3 sets on each side), which can form multi-point support with the upper slide seat 2, disperse the concentrated load of the seat and the weight of the driver and passengers on the lower slide rail 1, prevent the lower slide rail 1 from bending and deforming due to long-term load, and ensure that the upper slide seat 2 always slides along the preset guide surface to prevent jamming or deviation.

[0044] The elastic limiting component 4 is welded and fixed to the end of the lower slide rail 1 (i.e., the extreme position of the sliding stroke of the upper slide block 2) via the fixed plate 41. The limiting plate 42 is elastically connected to the fixed plate 41 through an elastic telescopic structure. Its core function is "stroke limitation + impact buffering". The specific process is as follows:

[0045] First, when the upper slide block 2 slides along the lower slide rail 1 toward the end and approaches the preset maximum sliding stroke, the side of the end of the upper slide block 2 first contacts the inner contact surface of the limiting plate 42. At this time, the elastic telescopic structure is in a natural extension state, and the limiting plate 42 initially blocks the upper slide block 2 from continuing to slide.

[0046] Secondly, if the user continues to apply the pushing force (or the upper slide block 2 still has a tendency to slide due to inertia), the limiting plate 42 is subjected to the squeezing force of the upper slide block 2, which drives the elastic telescopic structure to compress and deform along the sliding direction. The elastic telescopic structure absorbs the impact energy during the deformation process, transforming the "hard collision" into an "elastic buffer" to avoid abnormal noise or structural damage caused by the direct rigid contact between the upper slide block 2 and the end of the lower slide rail 1.

[0047] Finally, when the elastic telescopic structure is compressed to its limit (i.e., the maximum compression of the elastic telescopic structure corresponds to the preset safe stroke), the reaction force it generates balances with the sliding force of the upper slide block 2. The upper slide block 2 stops sliding, achieving precise limitation of the sliding stroke and preventing the upper slide block 2 from coming off the end of the lower slide rail 1. When the user adjusts the seat in the opposite direction (i.e., slides away from the end of the lower slide rail 1), the squeezing force of the upper slide block 2 on the limiting plate 42 disappears, and the elastic telescopic structure resets under its own elastic restoring force, driving the limiting plate 42 back to the initial position, preparing for the next stroke limitation.

[0048] Through the above mechanism, the auxiliary support component 3 and the elastic limiting component 4 work together: the auxiliary support component 3 ensures the smoothness and stability of the sliding process of the upper slide seat 2, and the elastic limiting component 4 ensures the safety and reliability of the sliding stroke. The combination of the two makes the seat slide rail not only meet the needs of "convenience of adjustment" for automotive interior modification, but also avoids the problems of easy jamming, easy derailment and collision damage of traditional slide rails through structural design, and is suitable for modification scenarios of seats of different weights.

[0049] Optionally, by Figure 1 and Figure 2 As shown in this embodiment, the lower slide rail 1 has a "U" shaped structure, and the upper slide block 2 has an "n" shaped structure. The lower slide rail 1 has outwardly bent inverted "L" shaped first folded edges 11 on both sides, and the upper slide block 2 has inwardly bent inverted "L" shaped second folded edges 21 on both sides. The vertical part of the first folded edge 11 is embedded in the inner side of the second folded edge 21, and the vertical part of the second folded edge 21 is embedded in the inner side of the first folded edge 11 to form a sliding fit structure. After adopting the above scheme, in use, the lower slide rail 1 and the upper slide block 2 are pre-assembled through the complementary structure of "U" and "n" shapes. The "inverted L" and "L" shapes of the first folded edge 11 and the second folded edge 21 form an inner and outer nested interlocking fit: the vertical part of the first folded edge 11 is embedded in the inner side of the second folded edge 21, and the vertical part of the second folded edge 21 is correspondingly embedded in the inner side of the first folded edge 11. The vertical sides of the two are tightly fitted to form a bidirectional guiding sliding fit surface.

[0050] When an adjustment force is applied to the seat along the longitudinal direction of the vehicle body, the force is transmitted to the upper sliding seat 2, causing the second folding edge 21 to slide axially along the vertical side of the first folding edge 11. The horizontal parts of the first folding edge 11 and the second folding edge 21 respectively form upper and lower support surfaces. The upper surface of the horizontal part of the first folding edge 11 supports the upper sliding seat 2, distributing the vertical load of the seat and the driver and passengers, and preventing vertical displacement during the sliding process.

[0051] Meanwhile, the interlocking vertical parts form a radial limit, restricting the horizontal displacement of the upper slide block 2 relative to the lower slide rail 1, preventing the risk of left and right swaying or derailment during sliding. Through the mutual constraint of the first folded edge 11 and the second folded edge 21, the smoothness of the relative sliding of the upper slide block 2 and the lower slide rail 1 is ensured, and the rigidity and stability of the overall connection are improved, so that the force is uniform during the sliding process.

[0052] Optionally, by Figures 1-3As shown in this embodiment, the auxiliary support assembly 3 also includes perforated support ears 31 and a fixed shaft 33; the two perforated support ears 31 are symmetrically fixed to the top surface of the horizontal portion of the first folded edge 11; the fixed shaft 33 is fixed to the end face of the support roller 32, and the fixed shaft 33 passes through the perforated support ears 31 to form a rotating structure. With the above solution, when in use, the two perforated support ears 31 are symmetrically fixed to the top surface of the horizontal portion of the first folded edge 11, forming a stable double-sided mounting carrier, providing a precise assembly reference for the fixed shaft 33 and the support roller 32, and ensuring that the components are subjected to balanced forces after installation.

[0053] The fixed shaft 33 and the support roller 32 are fixed by interference fit or welding, so that the two form an integrated structure that rotates synchronously. At the same time, the two ends of the fixed shaft 33 pass through the through holes of the support lug 31 with holes. The clearance fit between the shaft and the hole forms a hinge structure that can rotate freely, reducing the frictional resistance during rotation.

[0054] When the upper slide block 2 slides relative to the lower slide rail 1, the lower surface of the horizontal part of the upper slide block 2 keeps in contact with the first lubrication sleeve 34 on the outer circumference of the support roller 32. The friction generated by the sliding drives the support roller 32 to rotate around the axis of the fixed shaft 33, converting the sliding friction between the upper slide block 2 and the lower slide rail 1 into the rolling friction of the support roller 32.

[0055] The vertical height design of the perforated support lug 31 ensures that the support roller 32 always maintains effective contact with the upper slide block 2, which avoids support failure caused by excessively loose contact and prevents excessively tight contact from increasing rotational resistance. Together with the rigid support of the fixed shaft 33, it can stably distribute the vertical load transmitted by the upper slide block 2, and prevent the first folded edge 11 from deforming due to excessive local stress, further ensuring the smoothness of the slide rail sliding process and the structural stability.

[0056] Optionally, by Figure 1 , Figure 2 and Figure 4 As shown in this embodiment, the elastic telescopic structure includes a telescopic rod 43 and a telescopic spring 44. One end of the telescopic rod 43 is rigidly fixed to the fixed plate 41, and the other end is rigidly fixed to the limiting plate 42. The telescopic spring 44 is sleeved on the telescopic rod 43 and is located between the fixed plate 41 and the limiting plate 42. With the above scheme, when in use, the fixed plate 41 is rigidly fixed to the end of the lower slide rail 1, forming the installation reference of the elastic telescopic structure. The telescopic rod 43 forms an integrated force system with the fixed plate 41 and the limiting plate 42 through rigid connections at both ends (such as welding or thread fastening). Its core function is to provide axial guidance and rigid support for the telescopic spring 44, and to prevent the telescopic spring 44 from bending or shifting during deformation.

[0057] In the non-limited state, the telescopic spring 44 is in a naturally extended state, with its two ends in contact with the inner side wall of the fixed plate 41 and the outer side wall of the limiting plate 42, respectively. At this time, under the axial constraint of the telescopic rod 43, the limiting plate 42 is in the preset initial position of the lower slide rail 1, maintaining a safe distance from the upper slide block 2, and does not affect the normal sliding adjustment of the slide rail.

[0058] When the seat drives the upper slide block 2 to slide down to the end of the lower rail 1 and triggers the travel limit, the end of the upper slide block 2 first contacts the inner wall of the limit plate 42 and applies an axial thrust. This thrust is transmitted to the telescopic spring 44 through the limit plate 42, causing the spring to compress and deform along the axial direction of the telescopic rod 43. During this process, the telescopic rod 43 strictly limits the radial displacement of the telescopic spring 44 to prevent the telescopic spring 44 from causing uneven buffering force or failure due to lateral displacement, and to ensure that the compression deformation of the telescopic spring 44 always proceeds along the sliding direction of the upper slide block 2.

[0059] As the compression of the telescopic spring 44 increases, the elastic reaction force it generates also increases. On the one hand, this counteracts the sliding thrust of the upper slide block 2, gradually slowing down the sliding speed of the upper slide block 2 and gradually absorbing the impact energy, thus preventing a rigid collision between the upper slide block 2 and the end of the lower slide rail 1. On the other hand, when the telescopic spring 44 is compressed to its limit (i.e., the compression of the telescopic spring 44 reaches the preset safe travel threshold), the length of the telescopic rod 43 limits the further deformation of the telescopic spring 44, forming a rigid stop. Together with the reaction force of the telescopic spring 44, this completely prevents the upper slide block 2 from continuing to slide, precisely locking the upper limit of the sliding travel and preventing the upper slide block 2 from detaching from the lower slide rail 1.

[0060] When the user adjusts the seat in the opposite direction (moving the upper slide 2 away from the end of the lower slide rail 1), the thrust of the upper slide 2 on the limiting plate 42 disappears. Under the action of its own elastic restoring force, the telescopic spring 44 extends axially along the telescopic rod 43, pushing the limiting plate 42 to reset synchronously to the initial limiting position. The telescopic rod 43 ensures that the limiting plate 42 always moves axially during the reset process, avoiding positional deviation and preparing for the next stroke limit, thus realizing the repeated and reliable operation of the limiting function.

[0061] Preferably, by Figure 1 , Figure 2 and Figure 4As shown in this embodiment, a rubber pad 45 is bonded and fixed to the outer wall of the limiting plate 42. With the above solution, the rubber pad 45 has excellent elastic deformation capability during use. When the upper slide 2 contacts the limiting plate 42, it can undergo flexible deformation before the telescopic spring 44, forming a dual buffer system of "rubber pad 45 pre-buffering + telescopic spring 44 main buffering", which further absorbs the sliding impact energy of the upper slide 2 and avoids the rigid impact generated by the direct collision between the metal upper slide 2 and the limiting plate 42. At the same time, the rubber material can isolate the collision noise when metal contacts, significantly reduce the noise during seat adjustment, and improve the quietness of the driving environment.

[0062] In addition, the rubber pad 45 serves as an isolation medium between the upper slide 2 and the limiting plate 42, which can avoid direct friction between the metal surfaces of the two and prevent scratches, wear, or paint peeling from the outer wall of the limiting plate 42 and the end of the upper slide 2 after long-term use. Especially for the structure of surface spraying anti-rust coating commonly used in modified seat slide rails, the rubber pad 45 can effectively protect the integrity of the coating, extend the anti-rust life of the slide rail, and reduce the later maintenance cost.

[0063] Meanwhile, the rubber pad 45 has a high coefficient of friction, and its contact friction with the end of the upper slide seat 2 is significantly greater than the contact friction between metals. When the upper slide seat 2 is in the limited position (assuming the seat is always in the maximum adjustment position for a period of time, the upper slide seat 2 moves to the maximum position, so the end face of the upper slide seat 2 is always in contact with the rubber pad 45 during vehicle movement, and if the vehicle bumps and causes a small displacement), the rubber pad 45 can limit the movement of the upper slide seat 2 through friction, preventing the seat from becoming loose or shifting in the limited position, further improving the stability of the seat position and ensuring driving safety; at the same time, the anti-slip properties can also reduce the "slipping" phenomenon at the moment of contact between the upper slide seat 2 and the limiting plate 42, making the limiting action more precise and reliable, and also avoiding noise generated by relative friction between metals.

[0064] Preferably, by Figure 1 , Figure 2 and Figure 5 As shown, this embodiment also includes a protrusion 6 and a second lubricating sleeve 7; a recess 211 is formed on the vertical part of the second folded edge 21 by pressing and forming; the protrusion 6 is fixed to the outer wall of the lower slide rail 1 and is adapted to the recess 211; the second lubricating sleeve 7 is fixed to the outer wall of the protrusion 6. With the above solution, in use, the vertical part of the second folded edge 21 forms a recess 211 through the pressing and forming process, which is adapted to the gap with the protrusion 6 fixed to the outer wall of the lower slide rail 1. During assembly, the protrusion 6 is embedded in the recess 211 along the sliding direction parallel to the slide rail, forming a "protruding outside and concave inside" nested structure, which provides a lateral (perpendicular to the sliding direction) pre-positioning reference for the relative sliding of the upper slide block 2 and the lower slide rail 1, and avoids left and right misalignment during assembly.

[0065] When the upper slide block 2 slides along the lower slide rail 1, the inner wall of the recess 211 always stays in contact with the outer wall of the protrusion 6 (and the second lubrication sleeve 7). The protrusion 6 forms an integrated structure with the lower slide rail 1 by rigid fixing (such as welding or stamping). Its protruding shape can physically block the lateral displacement of the recess 211. If the upper slide block 2 tends to shift to the left or right due to vehicle bumps or uneven force, the side wall of the recess 211 will come into contact with the protrusion 6. The offset force is offset by the supporting force of the protrusion 6, which limits the lateral displacement of the upper slide block 2 and ensures that the upper slide block 2 always slides along the preset direction of the lower slide rail 1.

[0066] The second lubrication sleeve 7 is made of a wear-resistant polymer material with a low coefficient of friction (such as modified polytetrafluoroethylene or ultra-high molecular weight polyethylene). It is fixed to the outer wall of the protrusion 6 by interference fit or adhesive bonding. Its outer wall is in direct contact with the inner wall of the recess 211. When the upper slide 2 slides, sliding friction is generated between the inner wall of the recess 211 and the second lubrication sleeve 7, which significantly reduces the sliding resistance of the lateral constraint structure and avoids the increase of the overall adjustment force due to lateral fit. At the same time, the second lubrication sleeve 7 can isolate the direct metal contact between the protrusion 6 and the recess 211, preventing the generation of metal debris or paint wear due to friction. Especially for the "frequent adjustment" scenario often faced in modified slide rails, it can effectively extend the service life of the protrusion 6 and the second folded edge 21.

[0067] Optionally, by Figures 1-3 , Figure 5 As shown in this embodiment, both the first lubrication sleeve 34 and the second lubrication sleeve 7 are polytetrafluoroethylene (PTFE) components. With the above solution, PTFE has excellent self-lubricating properties during use. It has a low coefficient of friction and can achieve long-term stable lubrication without the need for additional lubricating oil. For the first lubrication sleeve 34, during its contact with the bottom of the upper slide block 2, the self-lubricating properties of PTFE can further reduce the frictional resistance when the supporting roller 32 rolls, making seat adjustment easier. For the second lubrication sleeve 7, during its sliding contact with the inner wall of the recess 211, the self-lubricating properties can avoid "dry friction" jamming caused by insufficient lubrication, while eliminating the maintenance steps of regularly replenishing lubricant, reducing the user's later maintenance costs, and avoiding the risk of lubricant evaporation and leakage contaminating the car interior.

[0068] PTFE also has excellent wear resistance. Even under long-term high-frequency sliding or certain load conditions, the first lubrication sleeve 34 and the second lubrication sleeve 7 are not prone to wear or peeling. Specifically, the first lubrication sleeve 34 can prevent metal wear caused by direct friction between the metal surface of the supporting roller 32 and the bottom of the upper slide block 2, and the second lubrication sleeve 7 can isolate the metal contact wear between the protrusion 6 and the recess 211. Together, they reduce the wear rate of the core mating parts of the slide rail, which meets the needs of long-term stable use after the modification of the car interior.

[0069] Preferably, by Figure 1 and Figure 2 As shown, this embodiment also includes a steel ball 5; the top surface of the first folded edge 11 is provided with a first limiting surface 111, and the inner side of the upper slide block 2 is provided with a second limiting surface 22. The steel ball 5 is located between the first limiting surface 111 and the second limiting surface 22. With the above solution, in use, the first limiting surface 111 on the top surface of the first folded edge 11 and the second limiting surface 22 on the inner side of the upper slide block 2 are arranged in parallel relative to each other, forming a "vertical constraint space" with a spacing adapted to the diameter of the steel ball 5. The height of this space (i.e., the distance between the two limiting surfaces) is slightly greater than the diameter of the steel ball 5, which ensures that the steel ball 5 can roll freely and avoids excessive vertical movement. At the same time, both the first limiting surface 111 and the second limiting surface 22 are arc-shaped surfaces, which can restrict the steel ball 5 from leaving the constraint space in the lateral direction, thereby achieving precise installation and positioning of the steel ball 5.

[0070] When the upper slide block 2 slides relative to the lower slide rail 1, the second limiting surface 22 of the upper slide block 2 maintains a relative position and contacts the upper surface of the steel ball 5. The vertical load of the seat and the driver / passenger is transmitted to the steel ball 5 through the second limiting surface 22. The lower surface of the steel ball 5 contacts the first limiting surface 111, further transmitting the vertical load to the lower slide rail 1. At this time, the sliding driving force of the upper slide block 2 will cause the second limiting surface 22 to generate a lateral friction force on the steel ball 5, causing the steel ball 5 to rotate around its own center along the sliding direction of the slide rail. This transforms the sliding friction between the second limiting surface 22 and the first limiting surface 111 into the rolling friction of the steel ball 5, which can significantly improve the smoothness of operation and avoid the phenomenon of "sliding and jamming".

[0071] In addition, the steel balls 5 are arranged at intervals along the sliding direction of the slide rail (multiple balls are set, and the number of balls is determined according to the length of the slide rail and the actual sliding range) to form a multi-point support system: each steel ball 5 can bear part of the vertical load, and distribute the concentrated load transmitted by the upper slide block 2 to multiple positions of the first folded edge 11, so as to avoid the first limiting surface 111 from being dented and deformed due to excessive local stress.

[0072] Components not described in detail in this article are existing technologies.

[0073] The working principle and usage process of this utility model: When using the seat slide rail of this utility model in the scenario of car interior modification, the seat to be modified is fixedly connected to the upper slide block 2 by bolts or buckles, and the lower slide rail 1 is rigidly fixed to the car body floor by welding or fasteners, forming a stable assembly system of "seat-upper slide block 2-lower slide rail 1-car body".

[0074] When the user needs to adjust the seat position, a pushing or pulling force along the longitudinal direction of the vehicle body is applied to the seat. This force is transmitted to the upper sliding seat 2, causing the upper sliding seat 2 to slide relative to the lower sliding rail 1, thereby achieving linear adjustment of the seat position.

[0075] The auxiliary support assembly 3 is rotatably mounted on the top of the lower slide rail 1 via a bearing seat. The outer circumferential surface of the support roller 32 is kept in contact with the bottom sliding contact surface of the upper slide block 2. Its core function is achieved through "rolling friction replacement + lubrication enhancement".

[0076] First, when the upper slide block 2 slides relative to the lower slide rail 1, the bottom of the upper slide block 2 comes into contact with the outer circumferential surface of the support roller 32. Since the support roller 32 can rotate freely around its own axis, the traditional "sliding friction between the upper slide block 2 and the lower slide rail 1" is transformed into "rolling friction of the support roller 32". According to the principle of friction mechanics, the rolling friction coefficient is much smaller than the sliding friction coefficient, which can significantly reduce the resistance when the upper slide block 2 slides, making seat adjustment easier and operation smoother.

[0077] Secondly, the first lubrication sleeve 34, which is fitted onto the outer circumference of the support roller 32, is made of a wear-resistant material with a low coefficient of friction (such as polytetrafluoroethylene or modified nylon). On the one hand, it can fill the tiny gap between the support roller 32 and the bottom of the upper slide block 2, avoiding vibration noise caused by the gap during sliding. On the other hand, the first lubrication sleeve 34 itself has self-lubricating properties, which can continuously reduce contact friction without the need for additional lubricant. At the same time, it isolates the support roller 32 from the direct metal contact between the upper slide block 2, reducing wear on both and extending the overall service life of the slide rail.

[0078] Finally, the auxiliary support components 3 are spaced apart along the length of the lower slide rail 1 (e.g., 2-3 sets on each side), which can form multi-point support with the upper slide seat 2, disperse the concentrated load of the seat and the weight of the driver and passengers on the lower slide rail 1, prevent the lower slide rail 1 from bending and deforming due to long-term load, and ensure that the upper slide seat 2 always slides along the preset guide rail surface to prevent jamming or displacement.

[0079] The elastic limiting component 4 is welded and fixed to the end of the lower slide rail 1 via the fixed plate 41. The limiting plate 42 is elastically connected to the fixed plate 41 through an elastic telescopic structure. Its core function is "stroke limitation + impact buffering". The specific process is as follows:

[0080] First, when the upper slide block 2 slides along the lower slide rail 1 toward the end and approaches the preset maximum sliding stroke, the side of the end of the upper slide block 2 first contacts the inner contact surface of the limiting plate 42. At this time, the elastic telescopic structure is in a natural extension state, and the limiting plate 42 initially blocks the upper slide block 2 from continuing to slide.

[0081] Secondly, if the user continues to apply the pushing force (or the upper slide block 2 still has a tendency to slide due to inertia), the limiting plate 42 is subjected to the squeezing force of the upper slide block 2, which drives the elastic telescopic structure to compress and deform along the sliding direction. The elastic telescopic structure absorbs the impact energy during the deformation process, transforming the "hard collision" into an "elastic buffer" to avoid abnormal noise or structural damage caused by the direct rigid contact between the upper slide block 2 and the end of the lower slide rail 1.

[0082] Finally, when the elastic telescopic structure is compressed to its limit (i.e., the maximum compression of the elastic telescopic structure corresponds to the preset safe stroke), the reaction force generated by it balances the sliding force of the upper slide 2, and the upper slide 2 stops sliding, thus achieving precise limitation of the sliding stroke and preventing the upper slide 2 from coming off the end of the lower slide rail 1. When the user adjusts the seat in the opposite direction (i.e., slides away from the end of the lower slide rail 1), the squeezing force of the upper slide 2 on the limiting plate 42 disappears, and the elastic telescopic structure resets under its own elastic restoring force, driving the limiting plate 42 back to the initial position, preparing for the next stroke limitation.

[0083] Through the above mechanism, the auxiliary support component 3 and the elastic limiting component 4 work together: the auxiliary support component 3 ensures the smoothness and stability of the sliding process of the upper slide seat 2, and the elastic limiting component 4 ensures the safety and reliability of the sliding stroke. The combination of the two makes the seat slide rail not only meet the needs of "convenience of adjustment" for automotive interior modification, but also avoids the problems of easy jamming, easy derailment and collision damage of traditional slide rails through structural design, and is suitable for modification scenarios of seats of different weights.

[0084] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A seat slide based on a modification of the upholstery of a motor vehicle, comprising a lower slide rail (1) and an upper slide rail (2) which are in sliding engagement with one another, characterized in that It also includes auxiliary support components (3) and elastic limiting components (4); The auxiliary support assembly (3) is located on the top of the lower slide rail (1) and is used to assist in supporting the lower slide rail (1) and reduce the sliding resistance of the lower slide rail (1). It includes a support roller (32) rotatably mounted on the lower slide rail (1) and a first lubrication sleeve (34) sleeved on the support roller (32). The elastic limiting component (4) is located at the end of the lower slide rail (1) and is used to limit the sliding stroke of the upper slide block (2). It includes a fixing plate (41) fixed to the lower slide rail (1) and a limiting plate (42) connected to the fixing plate (41) by an elastic telescopic structure.

2. The seat track based on automotive interior modification according to claim 1, characterized in that: The lower slide rail (1) has a "U" shaped structure, and the upper slide block (2) has an "n" shaped structure; The lower slide rail (1) has outwardly bent inverted "L" shaped first folded edges (11) on both sides, and the upper slide (2) has inwardly bent "L" shaped second folded edges (21) on both sides. The vertical part of the first folded edge (11) is embedded inside the second folded edge (21), and the vertical part of the second folded edge (21) is embedded inside the first folded edge (11) to form a sliding fit structure.

3. The seat track based on automotive interior modification according to claim 2, characterized in that: The auxiliary support assembly (3) also includes a perforated support lug (31) and a fixed shaft (33). The two perforated support ears (31) are symmetrically fixed to the top surface of the horizontal part of the first folded edge (11); The fixed shaft (33) is fixed to the end face of the support roller (32), and the fixed shaft (33) passes through the perforated support ear (31) to form a rotating structure.

4. The seat track based on automotive interior modification according to claim 1, characterized in that: The elastic telescopic structure includes a telescopic rod (43) and a telescopic spring (44). One end of the telescopic rod (43) is rigidly fixed to the fixed plate (41), and the other end is rigidly fixed to the limiting plate (42); The telescopic spring (44) is sleeved on the telescopic rod (43) and located between the fixed plate (41) and the limiting plate (42).

5. The seat slide rail based on automotive interior modification according to claim 1, characterized in that: A rubber pad (45) is bonded and fixed to the outer wall of the limiting plate (42).

6. The seat track based on automotive interior modification according to claim 2, characterized by: It also includes a protrusion (6) and a second lubricating sleeve (7); A recessed portion (211) is formed on the vertical part of the second folded edge (21) by pressing and denting. The protruding portion (6) is fixed to the outer wall of the lower slide rail (1) and is adapted to the recessed portion (211). The second lubricating sleeve (7) is fixed to the outer wall of the protrusion (6).

7. The seat track based on automotive interior modification according to claim 6, characterized in that: Both the first lubricating sleeve (34) and the second lubricating sleeve (7) are polytetrafluoroethylene components.

8. The seat track based on automotive interior modification according to claim 2, characterized by: It also includes steel balls (5); The top surface of the first folded edge (11) is provided with a first limiting surface (111), the inner side of the upper slide (2) is provided with a second limiting surface (22), and the steel ball (5) is located between the first limiting surface (111) and the second limiting surface (22).

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